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BL1240 - Low current consumption

Description

BL1240 is a monolithic integrated circuit designed to repace mechanical bell in telephone sets in connection with an electro-acoustical converter.

It can drive directly a piezoceramic converter (buzzer) or a dynamic loudspeaker.

Features

  • Low current consumption, in order to allow the parallel operation of 4 devices. Integrated rectifier bridge with zener diodes to protect against overvoltages. Little external circuitry. Tone and switching frequencies adjustable by external components. Integrated voltage and current hysteresis.

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Datasheet Details

Part number BL1240
Manufacturer SHANGHAI BELLING
File Size 174.50 KB
Description Low current consumption
Datasheet download datasheet BL1240 Datasheet
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www.DataSheet4U.com BL1240 ELECTRONIC TWO – TONE RINGER Features Low current consumption, in order to allow the parallel operation of 4 devices. Integrated rectifier bridge with zener diodes to protect against overvoltages. Little external circuitry. Tone and switching frequencies adjustable by external components. Integrated voltage and current hysteresis. Description BL1240 is a monolithic integrated circuit designed to repace mechanical bell in telephone sets in connection with an electro-acoustical converter. It can drive directly a piezoceramic converter (buzzer) or a dynamic loudspeaker. The output current capability of BL1240 is higher than standard ringer. For driving a dynamic loud-speaker BL1240 can simply use a decoupling capacitor, thus eliminating the usual transformer.
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